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Cambridge IGCSE Environmental Management practice

Paper 1 structured question: Management of oil pollution

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Attempt questionManagement of oil pollution revisionRevise the key idea

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Topic

Management of oil pollution

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Paper 1TheoryPractical3 marks

The table shows data from an oil spill incident and the effectiveness of different cleanup methods used.

Results Table

Oil Spill Cleanup Effectiveness

Percentage of oil removed from the water after 24 hours using different methods.

Cleanup MethodPercentage of Oil Removed (%)
Booms40
Detergent Sprays60
Skimmers50
  1. a

    State which cleanup method removed the highest percentage of oil.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Explain why using a combination of cleanup methods might be more effective than using just one.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 1 structured question: Management of oil pollution

Paper 1TheoryPractical6 marks

Method

Testing Boom Effectiveness

A rectangular water tank is filled with water. A measured amount of oil is added to one end. A boom is placed to contain the oil. The spread of oil beyond the boom is observed and recorded over time.

StepDescription
1Fill tank with water
2Add measured oil at one end
3Place boom across tank
4Observe and record oil spread beyond boom every 5 minutes
  1. a

    Identify the independent variable in this investigation.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Suggest one control variable that should be kept constant during the investigation.

    Aim for approximately 1 distinct marking point.

    [1]
  3. c

    Describe how you would improve the reliability of the results.

    Aim for approximately 2 distinct marking points.

    [2]
  4. d

    Explain one safety consideration when conducting this investigation.

    Aim for approximately 2 distinct marking points.

    [2]